Java ByteBuffer to Hex toHexValue(ByteBuffer buffer)

Description

to Hex Value

License

Apache License

Declaration

public static String toHexValue(ByteBuffer buffer) 

Method Source Code

//package com.java2s;
/*/*from w  ww .j a  v a 2s  .  c  om*/
 * Copyright 2004-2005 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.nio.ByteBuffer;

public class Main {
    public static String toHexValue(ByteBuffer buffer) {
        StringBuffer result = new StringBuffer(buffer.remaining() * 2);
        while (buffer.hasRemaining()) {
            String value = Integer.toHexString(buffer.get() & 0xff);
            if (value.length() == 1)
                result.append("0"); //ensure 2 digit
            result.append(value);
        }
        return result.toString();
    }

    public static String toHexValue(long l) {
        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.putLong(0, l);
        return toHexValue(buffer);
    }

    public static String toHexValue(int i) {
        ByteBuffer buffer = ByteBuffer.allocate(4);
        buffer.putInt(0, i);
        return toHexValue(buffer);
    }

    public static String toHexValue(short s) {
        ByteBuffer buffer = ByteBuffer.allocate(2);
        buffer.putShort(0, s);
        return toHexValue(buffer);
    }

    public static String toHexValue(byte b) {
        ByteBuffer buffer = ByteBuffer.allocate(1);
        buffer.put(0, b);
        return toHexValue(buffer);
    }
}

Related

1. toHexString(ByteBuffer buffer)
2. toHexString(ByteBuffer buffer, int size)
3. toHexString(ByteBuffer byteBuffer)
4. toHexString(ByteBuffer byteBuffer)
5. toHexString(final ByteBuffer buffer)